Finding the Fourth Proportional to 99,099.52, 136,758.72 and 54,388.48

Step by Step Solution

1. Step 1: Write the proportion equation
   99,099.52 : 136,758.72 = 54,388.48 : x
2. Step 2: Convert to fraction form
   99,099.52/136,758.72 = 54,388.48/x
3. Step 3: Cross multiply
   99,099.52x = 136,758.72 × 54,388.48
4. Step 4: Simplify right side
   99,099.52x = 7,438,098,907.55
5. Step 5: Solve for x
   x = 7,438,098,907.55/99,099.52
6. Step 6: Final answer
   x = 75,056.86